221088298 has 16 divisors (see below), whose sum is σ = 351584064. Its totient is φ = 103910080.

The previous prime is 221088233. The next prime is 221088299. The reversal of 221088298 is 892880122.

It is a self number, because there is not a number n which added to its sum of digits gives 221088298.

It is not an unprimeable number, because it can be changed into a prime (221088299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26493 + ... + 33823.

It is an arithmetic number, because the mean of its divisors is an integer number (21974004).

Almost surely, 2^221088298 is an apocalyptic number.

221088298 is a deficient number, since it is larger than the sum of its proper divisors (130495766).

221088298 is a wasteful number, since it uses less digits than its factorization.

221088298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 221088298 is about 14869.0382338603. The cubic root of 221088298 is about 604.6748684468.

The spelling of 221088298 in words is "two hundred twenty-one million, eighty-eight thousand, two hundred ninety-eight".